I feel bad for people who can't find tables, but I have done my fair share of waiting while others finish eating. And in many cases when we are just about finished eating, we offer someone our table.
My sentiments and actions exactly.
I do love threads like this one, where we are asked to essentially buck human nature. Having one's spouse go and save a table in a busy restaurant, while the other spouse stands in line and orders food, goes back to the beginning of time.
I imagine that when Adam and Eve opened their first restaurant the first customer, Cain, came in and saved a table, explaining that he was waiting for his wife to appear.